XML Copyright 2000-2002 O’Reilly & Associates, Inc. All Rights Reserved. All trademarks and registered trademarks appearing on the O’Reilly Network are the property of their respective owners. For problems or assistance with this site, email help@oreillynet.com
O’Reilly Books Latest LAMP Titles: mod_perl Pocket Reference SQL in a Nutshell Network Printing Books by topic: Linux Open Source Security System and Network Administration Unix Web and Internet O’Reilly Network Technologies: ONJava.com ONLamp.com openp2p.com Perl.com XML.com Apache BSD Java Javascript and CSS Linux Mac Mozilla .NET P2P Perl Policy PHP Python Web Services Wireless
Sponsored by: Search | Newsletter | Conference | Tech Jobs O’Reilly’s Emerging Technology Conference: May 13-16, 2002 Articles Linux Apache MySQL Perl PHP Python BSD Essentials What is LAMP? The Best of ONLamp.com aboutSQL Big Scary Daemons FreeBSD Basics HTTP Wrangler Linux in the Enterprise Linux Network Administration The Linux Professional Perl P5P Digest Archive PHP Admin Basics PHP Phanatics Python_News Security Alerts Alphabetical Directory of Linux Commands This directory of Linux commands is from Linux in a Nutshell, 3rd Edition. Click on any of the 379 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Tech Books Online. Buy it now Read it online icmpinfo [options] TCP/IP command. Intercept and interpret ICMP packets. Print the address and name of the message’s sender, the source port, the destination port, the sequence, and the packet size. By default, provide information only about packets that are behaving oddly. Options -k Kill the syslogd process begun by -l. -l Record via syslogd. Only a privileged user may use this option. -n Use IP addresses instead of hostnames. -p Suppress decoding of port number: do not attempt to guess the name of the service that is listening at that port. -s Include IP address of interface that received the packet, in case there are several interfaces on the host machine. -v Verbose. Include information about normal ICMP packets. You may also specify -vv and -vvv for extra verbosity. Return to: Alphabetical Directory of Linux Commands Sponsored by:
XML Copyright 2000-2002 O’Reilly & Associates, Inc. All Rights Reserved. All trademarks and registered trademarks appearing on the O’Reilly Network are the property of their respective owners. For problems or assistance with this site, email help@oreillynet.com
O’Reilly Books Latest LAMP Titles: mod_perl Pocket Reference SQL in a Nutshell Network Printing Books by topic: Linux Open Source Security System and Network Administration Unix Web and Internet O’Reilly Network Technologies: ONJava.com ONLamp.com openp2p.com Perl.com XML.com Apache BSD Java Javascript and CSS Linux Mac Mozilla .NET P2P Perl Policy PHP Python Web Services Wireless Set the hardware clock according to the time given in the –date parameter. –test Do not actually change anything. This is good for checking syntax. -u, –utc The hardware clock is stored in Universal Coordinated Time. –version Print version and exit. -w, –systohc Set the hardware clock in accordance with the system time. Return to: Alphabetical Directory of Linux Commands
Sponsored by: Search | Newsletter | Conference | Tech Jobs O’Reilly’s Emerging Technology Conference: May 13-16, 2002 Articles Linux Apache MySQL Perl PHP Python BSD Essentials What is LAMP? The Best of ONLamp.com aboutSQL Big Scary Daemons FreeBSD Basics HTTP Wrangler Linux in the Enterprise Linux Network Administration The Linux Professional Perl P5P Digest Archive PHP Admin Basics PHP Phanatics Python_News Security Alerts Alphabetical Directory of Linux Commands This directory of Linux commands is from Linux in a Nutshell, 3rd Edition. Click on any of the 379 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Tech Books Online. Buy it now Read it online hwclock [options] System administration command. Read or set the hardware clock. This command maintains change information in /etc/adjtime, which can be used to adjust the clock based on how much it drifts over time. hwclock replaces the clock command. The single-letter options are included for compatibility with the older command. Options You may specify only one of the following options: -a Adjust the hardware clock based on information in /etc/adjtime and set the system clock to the new time. –adjust Adjust the hardware clock based on information in /etc/adjtime. –date date Meaningful only with the –set option. date is a string appropriate for use with the date command. –debug Print information about what hwclock is doing. -r, –show Print the current time stored in the hardware clock. -s, –hctosys Set the system time in accordance with the hardware clock. –set Sponsored by:
XML Copyright 2000-2002 O’Reilly & Associates, Inc. All Rights Reserved. All trademarks and registered trademarks appearing on the O’Reilly Network are the property of their respective owners. For problems or assistance with this site, email help@oreillynet.com
O’Reilly Books Latest LAMP Titles: mod_perl Pocket Reference SQL in a Nutshell Network Printing Books by topic: Linux Open Source Security System and Network Administration Unix Web and Internet O’Reilly Network Technologies: ONJava.com ONLamp.com openp2p.com Perl.com XML.com Apache BSD Java Javascript and CSS Linux Mac Mozilla .NET P2P Perl Policy PHP Python Web Services Wireless -V, –version Print version information and then exit. -y, –yp, –nis Display the NIS domain name. A privileged user can set a new NIS domain name with nameofhost. Return to: Alphabetical Directory of Linux Commands
Sponsored by: Search | Newsletter | Conference | Tech Jobs O’Reilly’s Emerging Technology Conference: May 13-16, 2002 Articles Linux Apache MySQL Perl PHP Python BSD Essentials What is LAMP? The Best of ONLamp.com aboutSQL Big Scary Daemons FreeBSD Basics HTTP Wrangler Linux in the Enterprise Linux Network Administration The Linux Professional Perl P5P Digest Archive PHP Admin Basics PHP Phanatics Python_News Security Alerts Alphabetical Directory of Linux Commands This directory of Linux commands is from Linux in a Nutshell, 3rd Edition. Click on any of the 379 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Tech Books Online. Buy it now Read it online hostname [option] [nameofhost] Set or print name of current host system. A privileged user can set the hostname with the nameofhost argument. Option -a, –alias Display the alias name of the host (if used). -d, –domain Print DNS domain name. -f, –fqdn, –long Print fully qualified domain name. -F file, –file file Consult file for hostname. -h, –help Print a help message and then exit. -i, –ip-address Display the IP address(es) of the host. -s, –short Trim domain information from the printed name. -v, –verbose Verbose mode. Sponsored by:
XML Copyright 2000-2002 O’Reilly & Associates, Inc. All Rights Reserved. All trademarks and registered trademarks appearing on the O’Reilly Network are the property of their respective owners. For problems or assistance with this site, email help@oreillynet.com